This is one more general information on the species:
• MALAFOSSE J.-P. et JOUBERT B., 2004 – Circaète Jean-le-Blanc Circaetus gallicus (Gmelin) 1788 // in Thiollay J.-M. et Bretagnolle V. (coord.), Rapaces nicheurs de France, Distribution, effectifs et conservation, Delachaux et Niestlé, Paris: pp. 60-65. (Fr).
…but, Jean-Pierre Malafosse with group of researchers had traced more than 400 cases of Short-toed Eagles breeding just till 2000 in the so-called Massif Central /map/. And their researches are continuing. Just think about it…
Bernard Joubert /map/ is an author of the “Le Circaète Jean-le-Blanc” book; see an extract from it (Fr) about the youngs’ behaviour after leaving the nests.